switch

#include<iostream>
#include<vector>
using namespace std;
int main(){
	char ch;
	int a=0,b=0,c=0,d=0,e=0;
	while(cin>>ch){
		switch(ch){
			case'a':a++;break;
			case'b':b++;break;
			case'c':c++;break;
			case'd':d++;break;
			default :e++;break;
		}
		if(ch=='1')
			break;
	}
	cout<<"a"<<a<<endl;
	cout<<"b"<<b<<endl;
	cout<<"c"<<c<<endl;
	cout<<"d"<<d<<endl;
	cout<<"e"<<e<<endl;
	return 0;
}